Bookcase



FIG. 1 is an elevational rear view of a bookcase showing my new and ornamental design,

FIG. 2 is a bottom plan view thereof,

FIG. 3 is an elevational front view thereof,

FIG. 4 is an elevational left side view thereof,

FIG. 5 is a first perspective rear view thereof,

FIG. 6 is a second perspective rear view thereof,

FIG. 7 is a first perspective front view thereof,

FIG. 8 is an elevational right side view thereof; and,

FIG. 9 is a top plan view thereof. 

CLAIM The ornamental design for a bookcase, as shown and described. 